Author:
Anisimov Daniil S.,Chekusova Victoria P.,Trul Askold A.,Abramov Anton A.,Borshchev Oleg V.,Agina Elena V.,Ponomarenko Sergey A.
Abstract
AbstractModern solid-state gas sensors approaching ppb-level limit of detection open new perspectives for process control, environmental monitoring and exhaled breath analysis. Organic field-effect transistors (OFETs) are especially promising for gas sensing due to their outstanding sensitivities, low cost and small power consumption. However, they suffer of poor selectivity, requiring development of cross-selective arrays to distinguish analytes, and environmental instability, especially in humid air. Here we present the first fully integrated OFET-based electronic nose with the whole sensor array located on a single substrate. It features down to 30 ppb limit of detection provided by monolayer thick active layers and operates in air with up to 95% relative humidity. By means of principal component analysis, it is able to discriminate toxic air pollutants and monitor meat product freshness. The approach presented paves the way for developing affordable air sensing networks for the Internet of Things.
Funder
Ministry of Science and Higher Education of the Russian Federation
Russian Science Foundation
Publisher
Springer Science and Business Media LLC
Cited by
30 articles.
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